My code error

Course Q&A Deep Learning Specialization Neural Networks and Deep Learning
1

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{moderator edit - solution code removed}

why my code is error?
File “”, line 34
cost = (1/m)*np.sum(np.array(Y)*np.log(np.array(A))+(1-np.array(Y))*np.log(1-np.array(A)))
^
SyntaxError: invalid syntax

this is error code

2

Hmmm.

Notice that you’re working harder than you need to by rewriting the logic of the sigmoid function by hand. You just built that as a function, so the point of that was that you can then call it when you need sigmoid.

But notice that the parentheses do not match on that line: there are 5 open parens and only 4 close parens. That’s why it throws that syntax error on the next line. If you can’t find a syntax error in python, it usually means you are looking in the wrong place. :nerd_face:

If it throws an error at the beginning of a line, it usually means there is something incomplete about the previous line.

3

Also note that you don’t need to apply np.array to something that is already a numpy array … It does no harm, but it’s a waste of effort. Why write more code than you need to?